William a



(No Model.)

W. A. HOEVELER.

PIPE COUPLING.

No. sss,41s.

Patented Dec.'29, 1885.

N4 PETERS, PhnloLRhographnr, Washinginn, D. (Iv

UNrrEnT drarrjs wiLLr M A. HOEVELER, or PITTSBURG, PENXSYLVANIh-{fl i PlPE CGUPLlNG.

fZo all'whomiit nmy 'emaern: 1 v

-Be it'known that I, \VILLIAA'I-A. HoE'vELEn, a citizen of the United States, residing at Pitts burg, in the county of Alleghenyand State of .5 Pennsylvanimlhave invented certain new and nseful Improvementsin Pipe-Couplings; and I do hereby. declare the following to be a ,full, clear, and exact description-of the invention, reference being had to the accompanyi ng drawings, .which form part of thisspecific'ation.

.This invention has relation to pipe-coupjlings,.and relates more particularly to coup- Jings for pipes or conduits 'for conveying natur'al gas? under considerable pressure, as it has been found in this class of devices that, owing to the fact thatjnatural gas is of an exr ceedingly light and penetrating character, it is'al'most, ifnot entirely,impossible to construct a coupling or joint for the pipes in which it is conveyed which will not leak to a greater "or less degree, and that it' is necessary to surround the joint or coupling with a casing or box from which a pipe leads off, the gas es-- caping through the joint or coupling. a 5 My invention has for its object the provis- .ion of a novel form of coupling for the meet ing'ends of sections of gas-pipe, and has for v its further object the provision of a novel form of easing or box adapted to inclose the joint ,0 or coupling and receive any gas which may leak therethrough,-an escape-pipe leading from said box or coupling conveying off such leakage-gas to any desired point. j With these objects in view my invention 5 consists, essentially, in, first, forming the abutting ends of the pipes to be coupled with straight, overlapping, rabbeted, or beveled -edges, and securing-j the same togetherby means of rings or bands located inside and 0 outside the joint,-so as to embrace the same,

and fastened to the. pipes by means of bolts,

and nuts or rivets passing through the walls *of the pipe and through the hands, so as-to practically close the joint and render the same 5' comparatively'gas-tight; secondly, in the combination, with the gas-conduit in which the sections are coupled and secured together, as above set forth, of a casing or box surrounding the joint and constituting a chamber for o the reception'of leakage-gas, said casing being-formed and consisting of two bowls having'fianged mouths, ,which are secured tobolts 2) b to one of the sections, or one ringis Ar n' F Er" PHCIPIECATIGN iorming part oi L ettersPatent No. 333,413, dated Deoenab'er 188-5 Y -.'-.pplication med November a. 855. Serial summer. (No model.)

'gether by bolts and nuisigaindlwhjich tached to or made part or. the V they pertain, the casingss'o iornledbein -vided with suitable escape pip 'e's.

' In the accompanying drawings, Fig i e 1 is a longitudinal sectional view o'f'iny in proved coupling, and Figs. 2 and 3 sectional views of modifications. K 6

A A designate two separate'sections f pipe, which, for the purposes ofinyfin'ventiqn a re beveled, as shown in Fig. l, rabbeted, as'sh'own I in Figs. 2 and 3, or made plain, as shown in Fig. 4. i

B designates a ring or cylinder surrounding the joint, and B designates a similar ring of smaller diameter located on the inside of the joint corresponding with the ring B. The rings B B in the constructions shown in Fig. 2 are secured to the ends of the sections in a peculiar manner, necessitated by the fact that no access can be had to the interior of the casing after its parts are bolted together, the howls of the casing being integral with the sections. In the constructions shown in Figs. 1 and 3 the rings are secured to the ends .of both sections by bolts or rivets passing through both rings and rigidly fastened thereto; but the rings may, if desired, be secured to the sections by shrinking or expansion, as shown in Fig. 4, where the bolts or rivets are omit ted. The rings or bands B B may either be continuous, split, or in sections, and in some cases the hands may be let into recesses in the pipes, as shown in Fig. 5. In the construction shown in Fig. 2, however, where the bowls forming the casingare integral with the pipe, the rings 13 B are first secured by o secured to one section and the other to the 9 adjacent section, while the rings are slotted on line corresponding with the bolts on the other section, -'so that when the two sections are brought together each ring will embrace or interlock with the projecting ends of the bolts on the other ring, as shown.

. The casing, as has been suggested, consists of two bowls, G 0, having flanges c 0 around 1 their months, which are pierced for the paszoo sage'of bolts cl d, having nuts 0" 0 by which the bowls are secured together, their lips being in contact, or a ring of lead or other appropriat'e packing material'being interposed,

as shown at e. These bowls may be made either a pert of the pipe-sections, as shown in Fig. 2, or they may be made separate therefrom and secured to the sections by bolts or rivets ff, as shown in Fig. 3, or other equivalent devices. These casings constitute chamhers for the reception of leakage-gas, should 'tongned and grooved, of the bands or body of the pipe; nor do I claim easing so.

constructed and provided with an"; outlet or escape.

Having fully described my it; I clai1n- 1. In a pipe-coupling, the combin ion,

with the sections A having their-ad;

ends correspondingly beveled, rabbei as describe B, embracing the joint and secured to the sec- 2 5 tions by belts or rivets, substantially as described.

2. In gas'conduits, the combination, with the seotionsA A and the rings or hands B B, embracing the joint and secured tothe sections, of the bowls C 0, having flanged mouths and secured together by means of bolts and nuts passing through the flanges, substantially as described.

3. In a pipe-coupling for gas mains or conhaving beveled or rabbeted ends, of the hardnietal interior and exterior rings, B B, riveted or otherwise secured to the sections, and the interposed packing-rings F F, substantially 0 In testimony that I claim the foregoing I have hereunto set my hand this 31st day of October, 1885.

. XVILLIAM A. HOEVELER. Witnesses:

Tees. A. CONNOLLY, C. L. STRAUB. 

